Wide-angle eyepiece lens

Details Wide-angle eyepiece lens Wide-angle eyepiece lens

1998-12-07

2000-12-26

Sugarman, Scott J.

Optical: systems and elements

Lens

Eyepiece

359715, 359774, 359787, G02B 2500, G02B 1318, G02B 934

Patent

active

061668613

ABSTRACT:
A wide-angle eyepiece lens having an angle of view greater than 60.degree. comprises, in order from the object end, a first lens group including a positive power meniscus lens element with a concave object side surface, an overall negative power second lens group including a doublet comprising, in order from the object side, a negative power lens element and a positive power lens element, and an overall positive power third lens group, and satisfies the following conditions:

REFERENCES:
patent: 5612823 (1997-03-01), Koizumi
patent: 5875057 (1999-02-01), Kato

Affiliated with

Also associated with

Rating

Wide-angle eyepiece lens does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wide-angle eyepiece lens, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wide-angle eyepiece lens will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1001543